. >> she spoke about christie's weight on cnn. >> i'm a republican so i like chris christie a lot. i want him to run. i just want him to lose weight. >> people who have a medical license, have the privilege of having a medical license, should in my view conduct themselves more responsibly than that. >> my position is more than a democrat or republican. i worry about this man dying in office. >> my 12-year-old son comes to me last night and says, dad, are you going to die? come on, this is irresponsible stuff. >> reporter: christie acknowledged he has a weight problem. a year and a half ago he was hospitalized from an asthma attack. >> my doctor warned me my luck is going to run out soon. it's something i'm conscious of. >> after years of david leno poking fun at his weight, christie and on the late show to show he, too, can get in on the joke. >> how is your cholesterol. >> dave, my cholesterol is normal, believe it or not. >> that's pretty good. what about your blood sugar? >> blood sugar, also normal. >> reporter: for dr. mariano, there's nothing normal about christie's health. o